Plastic traveler



Aug. 17, 1943. w, CAMP 2,326,828

PLASTIC TRAVELER Filed March 2, 1942 L/A/EAR JUPER POLYMER J g f2 L/A/f/ f? SUPER POLY/75f? A L//VEA/? SUPER POLYMER L/A EAR SUPER POL YMER I N VEN TOR. [VJ/[a 01 IV. Cam 0 ATTORNEYS Patented Aug. 17, 1943 UNITED STATES PATENT OFFICE PLASTIC TRAVELER William M. Camp, Glen Ridge, N. J., assignor to The Clark Thread Company, Newark, N. J., a corporation of New Jersey Application March 2, 1942, Serial No. 432,919

11 Claims.

This invention relates to travelers which are used on spinning and twisting frames in th textile industry.

In the past, travelers have been made of either steel or bronze, the bronze being used mostly on wet twisting where the presence of water makes it undesirable to use steel. These travelers rotate around the ring at a high speed, and in the case of twisting where the drag on the traveler is heavy it is necessary to provide lubrication between the traveler and the ring, this taking the form of an oil or grease. Even under conditions of good lubrication, wear takes place on the traveler and also on the ring and the fine particles of metal which are worn off become embedded in the grease and are subsequently oxidized and thus form visible stains on the yarns or threads. These stains consist of oxides, carbonates, soaps, etc., of the respective traveler and ring metals, and are very difiicult to remove in the ordinary processes of kier-boiling and bleaching.

Many attempts have been made to make travelers of materials, other than steel and bronze, using materials including hard rubber and glass. These materials, however, have not been satisfactory because of their brittleness and poor resistance against wear.

It is an object of this invention to provide a traveler possessing properties which have long been sought, including the following:

1. A longer life than steel or bronze travelers.

2. Requiring less lubrication than steel or bronze travelers or no lubrication.

3. Producing little or no Wear on the steel ring and therefore obviating the contamination of the yarn or thread referred to above.

The invention will be further described by reference to the accompanying drawing, in which Fig. 1 shows one type of conventional ring with a traveler mounted thereon;

Fig. 2 shows a traveler for use with the ring of Fig. 1;

Fig. 3 shows another type of conventional ring with a traveler mounted thereon; and

Fig. 4 shows a traveler for use with the ring shown in Fig- 3.

In accordance with this invention, travelers are made from a synthetic linear polyamide polymer, 9. description of which will be found in United States Patent No. 2,130,948 issued September 20, 1938 to Carothers, reference to which is made. In T view of the description of these polymers and their method of preparation in said patent, no

further description is here necessary. No claim is made to the polymer per se, the present invention being directed to a traveler made in whole or in part from said polymer. The preferred specific polymer is that identified in the trade as Nylon."

The travelers may be cast or molded. The details of molding or casting such polymers are known and therefore need not be described. The travelers may also be machined from flat stock. Instead of making the traveler entirely from the polymer, the traveler may comprise a metallic wire provided with a surface of said polymer, for example, by coating the wire with the polymer or embedding the wire within the polymer.

As above stated, the invention employs, in general, linear polyamide polymers. The preferred species is Nylon. The invention also provides the generic use of linear condensation polymers capable of being drawn into pliable, strong fibers as described and claimed in United States Patent No. 2,071,250 issued February 16, 1937 to Carothers, reference to which patent is herein made, that is, the invention provides travelers made in whole or part from said linear condensation polymers.

I claim:

1. A traveler for ring spinning and twisting the surface of which comprises a synthetic linear super polymer.

2. A traveler for ring spinning and twisting consisting of a synthetic linear super polymer.

3. A traveler for ring spinning and twisting the surface of which comprises a synthetic linear polyamide polymer.

4. A traveler for ring spinning and twisting consisting of a synthetic linear polyamide polymer.

5. A traveler for ring spinning and twisting the surface of which is composed essentially of Nylon.

6. A traveler for ring spinning and twisting consisting entirely of Nylon.

'7. A traveler for ring spinning and twisting having a metallic core and a wearing surface composed essentially of Nylon.

8. A traveler for ring spinning and twisting consisting entirely of a synthetic linear polyamide polymer.

9. A traveler for ring spinning and twisting the surface of which consists entirel of a synthetic linear polyamide polymer.

10. A traveler for ring spinning and twisting having a conventional form and adapted for use with a conventional type of ring, at least the surface of said traveler comprising a synthetic linear polyamide polymer.

11. A traveler for ring spinning and twisting having a conventional form and adapted for use with a conventional type of ring, at least the sur face of said traveler comprising Nylon.

WILLIAM M. CAMP. 

